*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #1a1a1a;
  --bg-card: #242424;
  --bg-input: #333;
  --text: #e0e0e0;
  --text-dim: #999;
  --accent: #f0a500;
  --accent-green: #4caf50;
  --accent-red: #e53935;
  --border: #3a3a3a;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* Auth Page */
.auth-container {
  max-width: 380px;
  margin: 80px auto;
  padding: 32px;
  text-align: center;
}

.logo {
  font-size: 2rem;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 4px;
}

.subtitle {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 28px;
  letter-spacing: 2px;
}

.auth-tabs {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.auth-tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: var(--bg-card);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.auth-tab.active {
  background: var(--accent);
  color: #1a1a1a;
  font-weight: 600;
}

.auth-form {
  display: none;
  flex-direction: column;
  gap: 12px;
}

.auth-form.active { display: flex; }

input {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

input:focus { border-color: var(--accent); }

.btn-primary {
  padding: 12px;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #1a1a1a;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.85; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  padding: 10px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.error-msg {
  color: var(--accent-red);
  font-size: 0.85rem;
  min-height: 20px;
}

/* Top Bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.username { font-weight: 600; }

.coins {
  background: #2a2a00;
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
}

.btn-logout {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
}

/* Tab Nav */
.tab-nav {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 12px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.tab {
  padding: 8px 20px;
  border: none;
  background: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.9rem;
  border-radius: var(--radius);
  transition: all 0.2s;
}

.tab.active {
  background: var(--bg-input);
  color: var(--accent);
  font-weight: 600;
}

/* Content */
.content {
  max-width: 680px;
  margin: 0 auto;
  padding: 24px 16px;
}

.panel { display: none; }
.panel.active { display: block; }

.page { display: none; }
.page.active { display: block; }

/* Home */
.coin-display {
  text-align: center;
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin: 20px 0;
}

.coin-icon { font-size: 3rem; }
.coin-amount { font-size: 2.5rem; font-weight: 700; color: var(--accent); }
.coin-label { color: var(--text-dim); font-size: 0.9rem; margin-top: 4px; }

/* Checkin */
.checkin-area {
  text-align: center;
  margin-top: 16px;
}

.btn-checkin {
  padding: 10px 28px;
  border: 1px dashed var(--accent);
  border-radius: var(--radius);
  background: transparent;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-checkin:hover { background: var(--accent); color: #1a1a1a; }
.btn-checkin:disabled { opacity: 0.4; cursor: not-allowed; }

.checkin-done {
  display: inline-block;
  color: var(--text-dim);
  font-size: 0.85rem;
  padding: 10px 28px;
}

.game-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.game-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
}

.game-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-icon { font-size: 2.5rem; margin-bottom: 8px; }
.game-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.game-card p { color: var(--text-dim); font-size: 0.85rem; }

/* Lottery */
.lottery-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  margin: 20px 0;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scratch-area {
  width: 160px;
  height: 160px;
  background: linear-gradient(135deg, #444, #333);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--text-dim);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 2px dashed #555;
}

.scratch-area:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(240, 165, 0, 0.2);
  border-color: var(--accent);
}

.lottery-result { text-align: center; }
.result-icon { font-size: 3rem; margin-bottom: 8px; }
.result-text { font-size: 1.3rem; font-weight: 600; }

.result-msg {
  text-align: center;
  color: var(--text-dim);
  margin-top: 8px;
}

.hint { color: var(--text-dim); font-size: 0.9rem; }
.hint strong { color: var(--accent); }

.lottery-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 8px;
}

.btn-batch {
  padding: 12px 24px;
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  background: transparent;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-batch:hover { background: var(--accent); color: #1a1a1a; }
.btn-batch:disabled { opacity: 0.4; cursor: not-allowed; }

.batch-results {
  margin-top: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.batch-results h3 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--text);
}

.batch-results h3 span {
  color: var(--accent);
  font-weight: 600;
}

.batch-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.batch-item {
  text-align: center;
  padding: 8px 4px;
  background: var(--bg-input);
  border-radius: 6px;
  font-size: 0.8rem;
}

.batch-item.win {
  border: 1px solid var(--accent);
}

.batch-item .item-prize {
  font-weight: 700;
  color: var(--accent);
}

.batch-item .item-name {
  color: var(--text-dim);
  font-size: 0.7rem;
  margin-top: 2px;
}

@media (max-width: 500px) {
  .batch-list { grid-template-columns: repeat(4, 1fr); }
  .lottery-buttons { flex-direction: column; align-items: center; }
}

/* Stocks */
.stock-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.stock-section h3 {
  font-size: 1rem;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

.stock-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.stock-row:last-child { border-bottom: none; }

.stock-name { font-weight: 600; }
.stock-symbol { color: var(--text-dim); font-size: 0.85rem; }
.stock-price { font-weight: 600; }
.stock-price.up { color: var(--accent-green); }
.stock-price.down { color: var(--accent-red); }

.stock-actions { display: flex; gap: 8px; }

.btn-trade {
  padding: 4px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.8rem;
  background: var(--bg-input);
  color: var(--text);
  transition: border-color 0.2s;
}

.btn-trade:hover { border-color: var(--accent); }
.btn-trade.buy { border-color: var(--accent-green); color: var(--accent-green); }
.btn-trade.sell { border-color: var(--accent-red); color: var(--accent-red); }

.portfolio-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.portfolio-row:last-child { border-bottom: none; }

.profit { font-weight: 600; }
.profit.positive { color: var(--accent-green); }
.profit.negative { color: var(--accent-red); }

.empty-hint { color: var(--text-dim); font-size: 0.9rem; text-align: center; padding: 12px; }

/* Leaderboard */
.leaderboard-list {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.leaderboard-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.leaderboard-row:last-child { border-bottom: none; }

.rank {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  background: var(--bg-input);
}

.rank.top1 { background: #f0a500; color: #1a1a1a; }
.rank.top2 { background: #b0b0b0; color: #1a1a1a; }
.rank.top3 { background: #cd7f32; color: #1a1a1a; }

.leaderboard-name { flex: 1; margin-left: 12px; font-weight: 500; }
.leaderboard-coins { font-weight: 700; color: var(--accent); }

.my-rank {
  margin-top: 20px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  text-align: center;
}

.my-rank .rank-coins { font-size: 1.3rem; color: var(--accent); font-weight: 700; }
.my-rank .rank-label { color: var(--text-dim); font-size: 0.85rem; }

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.7);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.modal.active { display: flex; }

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 90%;
  max-width: 360px;
  text-align: center;
}

.modal-content h3 { margin-bottom: 8px; }
.modal-content p { color: var(--text-dim); margin-bottom: 12px; font-size: 0.9rem; }
.modal-content input {
  width: 100%;
  text-align: center;
  margin-bottom: 12px;
}

.modal-close {
  float: right;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text-dim);
  line-height: 1;
}

.modal-buttons { display: flex; gap: 8px; }
.modal-buttons .btn-primary { flex: 1; }
.modal-buttons .btn-secondary { flex: 1; }

/* Responsive */
@media (max-width: 500px) {
  .game-cards { grid-template-columns: 1fr; }
  .tab { padding: 8px 12px; font-size: 0.8rem; }
  .content { padding: 16px 8px; }
  .coin-amount { font-size: 2rem; }
}